<template>
  <a-upload
    name="file"
    :multiple="true"
    :action="uploadAction"
    :headers="headers"
    :data="{'biz':bizPath}"
    :fileList="fileList"
    :beforeUpload="beforeUpload"
    @change="handleChange"
    :disabled="disabled"
    :returnUrl="returnUrl"
  >
    <a-button>
      <a-icon type="upload" />
      {{ text }}
    </a-button>
  </a-upload>
</template>

<script>
//import Vue from 'vue'
import { ACCESS_TOKEN } from "@/store/mutation-types";
import { getFileAccessHttpUrl } from "@/api/manage";

const FILE_TYPE_ALL = "all";
const FILE_TYPE_IMG = "image";
const FILE_TYPE_TXT = "file";
const uidGenerator = () => {
  return "-" + parseInt(Math.random() * 10000 + 1, 10);
};
const getFileName = path => {
  if (path.lastIndexOf("\\") >= 0) {
    let reg = new RegExp("\\\\", "g");
    path = path.replace(reg, "/");
  }
  return path.substring(path.lastIndexOf("/") + 1);
};
export default {
  name: "JUpload",
  data() {
    return {
      uploadAction: window._CONFIG["uploadURL"] + "/sys/common/upload",
      urlDownload: window._CONFIG["staticDomainURL"],
      headers: {},
      fileList: [],
      newFileList: []
    };
  },
  props: {
    text: {
      type: String,
      required: false,
      default: "点击上传"
    },
    fileType: {
      type: String,
      required: false,
      default: FILE_TYPE_ALL
    },
    /*这个属性用于控制文件上传的业务路径*/
    bizPath: {
      type: String,
      required: false,
      default: "temp"
    },
    value: {
      type: [String, Array],
      required: false
    },
    // update-begin- --- author:wangshuai ------ date:20190929 ---- for:Jupload组件增加是否能够点击
    disabled: {
      type: Boolean,
      required: false,
      default: false
    },
    // update-end- --- author:wangshuai ------ date:20190929 ---- for:Jupload组件增加是否能够点击
    //此属性被废弃了
    triggerChange: {
      type: Boolean,
      required: false,
      default: false
    },
    /**
     * update -- author:lvdandan -- date:20190219 -- for:Jupload组件增加是否返回url，
     * true：仅返回url
     * false：返回fileName filePath fileSize
     */
    returnUrl: {
      type: Boolean,
      required: false,
      default: true
    }
  },
  watch: {
    value(val) {
      if (val instanceof Array) {
        if (this.returnUrl) {
          this.initFileList(val.join(","));
        } else {
          this.initFileListArr(val);
        }
      } else {
        this.initFileList(val);
      }
    }
  },
  created() {
    try {
      const token = Vue.ls.get(ACCESS_TOKEN);
      this.headers = { "X-Access-Token": token };
    } catch (error) {
      console.log(error);
    }
  },

  methods: {
    initFileListArr(val) {
      if (!val || val.length == 0) {
        this.fileList = [];
        return;
      }
      let fileList = [];
      for (var a = 0; a < val.length; a++) {
        fileList.push({
          uid: uidGenerator(),
          name: val[a].fileName,
          status: "done",
          url: val[a].filePath,
          response: {
            status: "history",
            message: val[a].filePath
          }
        });
      }
      this.fileList = fileList;
    },
    initFileList(paths) {
      if (!paths || paths.length == 0) {
        //return [];
        // update-begin- --- author:os_chengtgen ------ date:20190729 ---- for:issues:326,Jupload组件初始化bug
        this.fileList = [];
        return;
        // update-end- --- author:os_chengtgen ------ date:20190729 ---- for:issues:326,Jupload组件初始化bug
      }
      let fileList = [];
      let arr = paths.split(",");
      for (var a = 0; a < arr.length; a++) {
        let url = getFileAccessHttpUrl(arr[a], this.urlDownload, "http");
        fileList.push({
          uid: uidGenerator(),
          name: getFileName(arr[a]),
          status: "done",
          url: url,
          response: {
            status: "history",
            message: arr[a]
          }
        });
      }
      this.fileList = fileList;
    },
    handlePathChange() {
      let uploadFiles = this.fileList;
      let path = "";
      if (!uploadFiles || uploadFiles.length == 0) {
        path = "";
      }
      let arr = [];

      for (var a = 0; a < uploadFiles.length; a++) {
        arr.push(uploadFiles[a].response.message);
      }
      if (arr.length > 0) {
        path = arr.join(",");
      }
      this.$emit("change", path);
    },
    beforeUpload(file) {
      var fileType = file.type;
      if (fileType === FILE_TYPE_IMG) {
        if (fileType.indexOf("image") < 0) {
          this.$message.warning("请上传图片");
          return false;
        }
      } else if (fileType === FILE_TYPE_TXT) {
        if (fileType.indexOf("image") >= 0) {
          this.$message.warning("请上传文件");
          return false;
        }
      }
      //TODO 扩展功能验证文件大小
      return true;
    },
    handleChange(info) {
      console.log("--文件列表改变--");
      let fileList = info.fileList;
      if (info.file.status === "done") {
        if (info.file.response.success) {
          fileList = fileList.map(file => {
            if (file.response) {
              let reUrl = file.response.message;
              file.url = getFileAccessHttpUrl(reUrl, this.urlDownload, "http");
            }
            return file;
          });
        }
      } else if (info.file.status === "error") {
        this.$message.error(`${info.file.name} 上传失败.`);
      } else if (info.file.status === "removed") {
        this.handleDelete(info.file);
      }
      this.fileList = fileList;
      if (info.file.status === "done" || info.file.status === "removed") {
        //returnUrl为true时仅返回文件路径
        if (this.returnUrl) {
          this.handlePathChange();
        } else {
          //returnUrl为false时返回文件名称、文件路径及文件大小
          fileList = fileList
            .filter(file => {
              if (file.response) {
                return file.response.success === true;
              }
              return false;
            })
            .map(file => {
              var fileJson = {
                fileName: file.name,
                filePath: file.response.message,
                fileSize: file.size
              };
              this.newFileList.push(fileJson);
              this.$emit("change", this.newFileList);
            });
        }
      }
    },
    handleDelete(file) {
      //如有需要新增 删除逻辑
      console.log(file);
    }
  },
  model: {
    prop: "value",
    event: "change"
  }
};
</script>

<style scoped>
</style>